The average math SAT score is 520 with a standard deviation of 116. A particular high school claims that its students have unusually high math SAT scores. A random sample of 40 students from this school was selected, and the mean math SAT score was 561. Is the high school justified in its claim? Explain. V. because the z-score ) is V since it within the range of a usual event, namely within V of the mean of the sample means. (Round to two decimal places as needed.)

Q: Suppose that you want to determine the number of people who will attend a conference this year. In…

A: Given information: The investigator wants to determine the umber of people who will attend a…

Q: Suppose the scores on an IQ test are normally distributed. If the test has a mean of 100 and a…

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Q: Q4: the statistics exam score of students has mean 74 and standard deviation 6.8. if a sample of 50…

A: Given,mean(μ)=74standard deviation(σ)=6.8sample size(n)=50

Q: In a survey of a group of men, the heights in the 20, 29 age group were normally distributed with a…

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Q: The sizes of car loans in North Carolina have mean $8,452 and a standard deviation $467. The…

A: The mean is 8452 and the standard deviation is 467.

Q: . A cannery processes sardines.  Sardines have a mean length 4.54 inches with a standard deviation…

A: Solution: Let X be the length of sardines. From the given information, X has a mean µ=4.54 inches…

Q: In the following probability distribution, the random variable x represents the number of activities…

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Q: If the mean height of a population of students is 68 inches with standard deviation 3 inches, what…

A: Given that      The mean height of a population of students is 68 inches with standard deviation 3…

Q: An English literature course was taken by 250 students. Each member of a random sample of 50 of…

A: a) The required probability is calculated as follows: PX¯-μ>2.5=PZ>2.53050…

Q: he average price of a home in your community is $200,000 with a standard deviation of $30,240. A…

A:

Q: rofessor wants to know if her Psychology statistics class has a good grasp of th. Six students are…

A: Given that  Sample size n=6 Population mean =70

Q: What is the sum of the deviation scores for the data in the frequency distribution table below?

A: Sum of deviation  of scores from mean is always zero.

Q: Suppose that the average cell phone bill at Bellevue University is $38.90 per month with a standard…

A: Given that, μ=$38.90σ=$3.64n=44 The mean standard deviation of sampling distribution of sample mean…

Q: zookeeper took a random sample of 30 days and observed how much food an elephant ate on each of…

A: Given : 90% CI for the mean amount of food was [341kg, 359kg].

Q: to estimate the mean height of male students on your campus, you will measure an srs of students.…

A:

Q: Suppose the probability a patient will recover from a disease following medication is 0.7. In a…

A: Given : the probability a patient will recover from a disease following medication is 0.7.  In a…

Q: For an audience of 600 people attending a concert, the average time on the journey to the concert…

A: Note: Hey, since there are multiple subparts posted, we will answer first three subparts. If you…

Q: Suppose that the true mean speed of cars in the school zone is actually 15 mph and the speeds we…

A: as the speed of cars in being measured in terms of the average, the parameter of interest is given…

Q: school conducted an IQ test to 32 randomly selected students. The standard deviation in the same…

A:

Q: A runner for team 1 can run a race in 54.6 seconds. Team 1 has running times with a mean of 52.1…

A: given data team 1 x1=54.6μ1=52.1σ1=2.09team 2x2=53.7μ2=51.2σ2=3.53we have to find z score  and and…

Q: 25. The College Board reported the following mean scores for the three parts of the Scholastic…

A: Solution: σ =100 a) µ = 502, n = 90 P(|X̅-µ| < 10) = = P(-10 < (X̅-µ) < 10) = = P(…

Q: The average number of dropouts for a school district has been 300 per year with a standard deviation…

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Q: The probability that Mugdho loses an arm-wrestling match against Snigdho is 60.0%. Let’s say,…

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Q: 3) An F-1 race has an average length of 305 kilometers with a standard deviation of 72 kilometers.…

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Q: Hila City typically has rain on about 16% of days in February. a. What is the probability that it…

A: Given,p=0.16q=1-0.16=0.84no.of days in the month of February(n)=28Let X= no.of days will rain in the…

Q: A professor wants to know if her Psychology statistics class has a good grasp of Ba math. Six…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: people were given three cups of water to taste. One was bottled water and the other two were tap…

A: The probability that student will guess the correct bottled water will be: p=13

Q: The probability that Mugdho loses an armwrestling match against Snigdho is 60.0%. Let’s say, there’s…

A: Solution-: Given: n=19,p=0.60 We find, (a) What is the mean number of matches where Snigdho…

Q: One in ten adults in a city visited a doctor last month. If a sample of 6 adults is selected…

A: Given,  One in 10 adults visited a doctor => p = 1/10 = 0.1 Sample size, n = 6 Let X is the…

Q: In a certain suburb, the mean house price in 2009 was $ 225,000. A real estate agent believes that…

A: Given that The mean house price  $ 225,00 i.e. µ = 225,00

Q: ims that the average monthly income of his school’s Bachelor of Science in Business Administration…

A: Given: μ=24700, σ=4100, n=49 As the sample size is higher than 30, we can assume a normal…

Q: ppose the average age of family members is 34 with a standard deviation of 4. If 100 members of the…

A: Given, μ=34σ=4 n=100

Q: Suppose Michigan is favored by 17.5 points over Indiana. If you bet a “unit” on Indiana and Indiana…

A: Given information: P(Win) = 0.50 P(Lose) = 0.50 Create a probability distribution table for winnings…

Q: Suppose that 8% of all males suffer some form of color blindness. 350 men are sampled. a. What is…

A: